选择题：窗体中有命令按钮Command1,事件过程如下:Public Function f(x As Integer)As Integer Dim y As I

窗体中有命令按钮Command1，事件过程如下：

Public Function f(x As Integer)As Integer

Dim y As Integer

x=20

y=2

f=x*Y

End Function

Private Sub Command 1_Click()

Dim y As Integer

static x As Integer

x=10

y=5

y=f(x)

Debug.Print x；y

End Sub

运行程序，单击命令按钮，则立即窗口中显示的内容是( )。

A．10 5

B．10 40

C．20 5

D．20 40